Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Fireproof composite sandwich board and preparation method thereof
The invention relates to the field of sandwich panels, in particular to a fireproof composite sandwich panel and a preparation method thereof. The composite sandwich board takes a polyethylene foam board as an outer board and polyurethane as a core material; in order to improve the performance of the sandwich panel, graphene oxide, O-carboxymethyl chitosan and phosphonitrilic chloride trimer are adopted to modify the sandwich panel. The preparation method comprises the following steps: firstly, carrying out amination treatment on graphene oxide, cross-linking the graphene oxide with amino groups on O-carboxymethyl chitosan through glutaraldehyde, and then grafting phosphonitrilic chloride trimer to obtain a flame-retardant material; the surface of O-carboxymethyl chitosan contains hydroxyl, and O-carboxymethyl chitosan can react with isocyanate under the catalytic action of dibutyltin dilaurate, so that the compatibility of the flame-retardant material and polyurethane is improved; the sandwich panel prepared by the invention is excellent in fireproof performance, high in compression strength and relatively high in practicability.
本发明涉及夹芯板领域，具体为一种防火复合夹芯板及其制备方法。所述复合夹芯板以聚乙烯发泡板为外板、聚氨酯作为芯材；为了提高夹芯板的性能，采用氧化石墨烯、O‑羧甲基壳聚糖和六氯环三磷腈对其进行改性。首先将氧化石墨烯进行氨基化处理，通过戊二醛将其与O‑羧甲基壳聚糖上的氨基进行交联，再接枝六氯环三磷腈，得到阻燃材料；由于O‑羧甲基壳聚糖表面含有羟基，在二月桂酸二丁基锡的催化作用下能与异氰酸酯反应，从而提高阻燃材料与聚氨酯的相容性；本发明制备的夹芯板防火性能优异，压缩强度大，具有较高的实用性。
Fireproof composite sandwich board and preparation method thereof
The invention relates to the field of sandwich panels, in particular to a fireproof composite sandwich panel and a preparation method thereof. The composite sandwich board takes a polyethylene foam board as an outer board and polyurethane as a core material; in order to improve the performance of the sandwich panel, graphene oxide, O-carboxymethyl chitosan and phosphonitrilic chloride trimer are adopted to modify the sandwich panel. The preparation method comprises the following steps: firstly, carrying out amination treatment on graphene oxide, cross-linking the graphene oxide with amino groups on O-carboxymethyl chitosan through glutaraldehyde, and then grafting phosphonitrilic chloride trimer to obtain a flame-retardant material; the surface of O-carboxymethyl chitosan contains hydroxyl, and O-carboxymethyl chitosan can react with isocyanate under the catalytic action of dibutyltin dilaurate, so that the compatibility of the flame-retardant material and polyurethane is improved; the sandwich panel prepared by the invention is excellent in fireproof performance, high in compression strength and relatively high in practicability.
本发明涉及夹芯板领域，具体为一种防火复合夹芯板及其制备方法。所述复合夹芯板以聚乙烯发泡板为外板、聚氨酯作为芯材；为了提高夹芯板的性能，采用氧化石墨烯、O‑羧甲基壳聚糖和六氯环三磷腈对其进行改性。首先将氧化石墨烯进行氨基化处理，通过戊二醛将其与O‑羧甲基壳聚糖上的氨基进行交联，再接枝六氯环三磷腈，得到阻燃材料；由于O‑羧甲基壳聚糖表面含有羟基，在二月桂酸二丁基锡的催化作用下能与异氰酸酯反应，从而提高阻燃材料与聚氨酯的相容性；本发明制备的夹芯板防火性能优异，压缩强度大，具有较高的实用性。
Fireproof composite sandwich board and preparation method thereof
一种防火复合夹芯板及其制备方法
ZHANG LI (Autor:in) / XU FEI (Autor:in) / HUANG PENGYU (Autor:in)
21.07.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
B32B
LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
,
Schichtkörper, d.h. aus Ebenen oder gewölbten Schichten, z.B. mit zell- oder wabenförmiger Form, aufgebaute Erzeugnisse
/
C08G
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
,
Makromolekulare Verbindungen, anders erhalten als durch Reaktionen, an denen nur ungesättigte Kohlenstoff-Kohlenstoff-Bindungen beteiligt sind
/
C08J
Verarbeitung
,
WORKING-UP
/
C08K
Verwendung von anorganischen oder nichtmakromolekularen organischen Stoffen als Zusatzstoffe
,
USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES AS COMPOUNDING INGREDIENTS
/
E04C
STRUCTURAL ELEMENTS
,
Bauelemente
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